Results 261 to 270 of about 20,924 (294)

Soil water retention curves based on idealized models

Russian Agricultural Sciences, 2013
Energy consideration of soil moisture as a medium bounded by the soil air and the soil solid phase allows us to obtain the water retention curve (WRC). A pedotransfer function (PTF) reflects approximations and simplifications made in the soil modeling.
V. A. Sysuev, I. I. Maksimov, V. V. Alekseev, V. I. Maksimov   +3 more
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Comparison of four methods for determining the soil water retention curve

2010
Peer ...
Zielinski, M., Sentenac, P., Atique, A, Sánchez, Marcelo, Romero Morales, Enrique Edgar   +4 more
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An Improved Fractal Equation for The Soil Water Retention Curve

Water Resources Research, 1996
The water retention curve, θ(ψ), is important for predicting soil physical properties and processes. Until recently, equations for the θ(ψ) were empirical. Advances in fractal geometry have led to the derivation of physical models for the θ(ψ). However, both existing fractal equations have only two parameters and thus are relatively inflexible.
E. Perfect, N. B. McLaughlin, B. D. Kay, G. C. Topp   +3 more
openaire   +1 more source

Characteristics of soil water retention curve at macro-scale

Science in China Series E: Technological Sciences, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tian, FuQiang, Mou, LiQin, Hu, HePing
openaire   +1 more source

Hysteresis and Uncertainty in Soil Water-Retention Curve Parameters

Journal of Geotechnical and Geoenvironmental Engineering, 2014
AbstractAccurate estimates of soil hydraulic parameters representing wetting and drying paths are required for predicting hydraulic and mechanical responses in a large number of applications. A comprehensive suite of laboratory experiments was conducted to measure hysteretic soil-water characteristic curves (SWCCs) representing a wide range of soil ...
William J. Likos, Ning Lu, Jonathan W. Godt   +2 more
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Aerodynamic method for obtaining the soil water retention curve

Eurasian Soil Science, 2013
A new method for the rapid plotting of the soil water retention curve (SWRC) has been proposed that considers the soil water as an environment limited by the soil solid phase on one side and by the soil air on the other side. Both contact surfaces have surface energies, which play the main role in water retention.
V. V. Alekseev, I. I. Maksimov
openaire   +1 more source

Efficient Laboratory Measurements of the Soil Water Retention Curve

Geotechnical Testing Journal, 2013
Abstract The knowledge of the soil water retention curve (SWRC) is of particular importance for unsaturated soils. However common techniques to determine SWRC may be much more time-consuming than other soil property testing techniques and may lack flexibility in controlling the stress state of the soil in the field, which is of most ...
Maria Mavroulidou, Zeljko Cabarkapa, Michael J. Gunn   +2 more
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The effect of earthworm coprolites on the soil water retention curve

Eurasian Soil Science, 2008
The effect of earthworm coprolites on the water retention curves in soils of different geneses and textures was investigated by the method of equilibrium centrifuging. Coprolites sampled in the field were com- pared with the surrounding soil. The effect of earthworms on a soddy-podzolic light loamy soil (from Moscow oblast) was comprehensively analyzed
A. V. Smagin, A. V. Prusak
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Using the energy integral of soil water retention curve to evaluate the Soil water availability

2011 International Symposium on Water Resource and Environmental Protection, 2011
The Soil water availability (SWA) reflects the degree of difficulty that plant absorbs and utilizes soil moisture. However, these SWA indexes including static criterions and dynamic indexes are inconsistent and difficult to use practically. In this paper, we thought SWA actually reflected consumption energy value of uptake water by plant, and the ...
null Hui Shi, null Fengqin Chen, null Huixia Wang, null Baojing Han   +3 more
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Pedotransfer functions for the soil water retention curve

2018
Pedotransfer functions allow prediction of the soil hydraulic characteristics from basic soil data. In this study pedotransfer functions were developed in order to obtain three specific points of the soil water retention curve: field capacity, wilting point and maximum capacity, which were considered to be correspondent to the water held in soil ...
Paz, A. M., Cipriano, D., Gonçalves, M. C., Pereira, L. S.   +3 more
openaire   +1 more source